sql server alter column
ALTER TABLE table_name
ALTER COLUMN column_name new_data_type(size);sql server alter column
ALTER TABLE table_name
ALTER COLUMN column_name new_data_type(size);sqlserver add column to table
ALTER TABLE dbo.doc_exa
ADD column_b VARCHAR(20) NULL,
column_c INT NULL ;sql change column in existing table
'This adds 'NOT NULL' to excisting column counting in the table mytable'
ALTER TABLE mytable ALTER COLUMN counting INT NOT NULL;sql alter table
-- With check if field already exists
IF NOT EXISTS(SELECT 1 FROM sys.columns
WHERE Name = N'Email'
AND Object_ID = Object_ID(N'dbo.Customers'))
BEGIN
ALTER TABLE Customers
ADD Email varchar(255);
ENDCopyright © 2021 Codeinu
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